Now users can download their data from snapchat on their device. If you are looking for the same then follow these given steps to request to download your Snapchat data
1. Open the Snapchat and go to your profile.
2. Then, Click on the gear icon to access settings.
3. Under Support, select "I Need Help.".
4. Next, choose "My Account & Security" and tap on "Submit a Request".
5. Fill in the required information and select "Download My Data" as the subject.
6. Explain in the message box that you would like to
download your Snapchat data, and finally, click on "Send" to submit your request.
For more read -
https://social.studentb.eu/read-blog/102840_how-to-download-snapchat-data.html